How to quickly grab the latest localizations

I have a multilingual forum that currently supports 15 languages and will probably support more in the future. Now that the locales are being regularly updated, I was wondering if there was an easy way for me to download the updates. On the addons site, the file names seem to be versionned, so I don't think I can make a script to wget and unzip them. On Transifex, it looks like they require additional processing before being used, as there are files in the addons download that aren't present in Transifex.